Precious and non-precious metal plating

Stainless steel electropolishing

Nadcap processing for Aerospace and Defense

Stampings, machined product, glass-to-metal seals

World-class specification plating services

General Metal Finishing is an industry leading specification plating company, offering specification barrel, vibratory and rack electroplating and electropolishing services.

We meet most ASTM and MIL standards and specialize in high-reliability applications for the medical, military/defense, electronics, aerospace, automotive, telecommunication and commercial electronics industries.

Precious Metal Plating

From a small start over 40 years ago, supplying rack and barrel gold electroplating services to machining, glass-to-metal seal, and stamping companies throughout New England, General Metal Finishing has grown significantly and now offers other precious metal platings and electropolishing services to companies across the globe.

The other shops had done their best, but we found that a significant amount of their output simply wasn't usable in our development.

Quality and Expertise

All of our metal finishing services are undertaken by over 100, highly-trained surface finishing and plating professionals. Our project teams are made up of both chemical engineers and experienced platers, guaranteeing you quality work – quickly. Our Nadcap, ISO 9001 and ISO 13485 certifications are your further assurance of our commitment to excellence in everything we do.

We have two facilities for barrel plating and rack plating, and over 40,000 square feet of manufacturing space. This means we are more than capable of handling even your most demanding requirements.

Stainless Steel

In addition to precious metal plating, we are also well-known for electropolishing stainless steel. This is a process in which any "peaks" or high spots, as well as any surface stresses left over from mechanical polishing pre-treatments, are dissolved, resulting in a smooth appearance.

The Precision Engineered Products Group of NN, Inc. combines in-depth materials science expertise with advanced engineering and production capabilities to design and manufacture a broad range of high precision metal and plastic components and assemblies.